Look the Part
My icon for exquisite garb, style and grace is Stromgard's own Condesa Ilaria Veltri dein Ansari lyndafjellman - my standard of perfection.
My own garb is improving steadily, but it's still far from my ideal. I don't devote enough time, I suppose. My first attempt was a huge failure, but I wore it anyway. By the sixth garment, I was looking reasonable. I hope to improve more. Advice I pass on to you that I should have given myself but didn't: attend a class or ask for help on the first garb and DO NOT SPEND MONEY ON FABRIC FOR YOUR FIRST GARB. Use a sheet. Consider it a pattern for fitting later garments, and move on. Some do hand stitching. I relied on Lady Singer last year and now rely on Lady Husquevarna-Viking (I upgraded) this year.
NOTE a Duct-tape dummy of yourself works well, especially when your teenage son is not around to stand on a chair and cringingly play dressmaker's dummy for you whilst you pin. Also, the boy is growing and won't be any good for it soon.
A by-no-means exhaustive list of resources is below - ASK me if it's not there... I'll find out for you, or post on Facebook.
Everyone starts with a T-Tunic: http://www.sca.org/officers/chatelain/pdf/ForwardIntothePast.pdf French Bliant: http://www.eg.bucknell.edu/~lwittie/sca/garb/bliaut.html
Viking Apron Dress: http://sca.uwaterloo.ca/mjc/sca/aprond.html
Sleeves: http://www.mathildegirlgenius.com/Documentation/SleeveClass.pdf
Houppelande: http://www.chezirene.com/articles/drafthoup.html
Fitting a Gown: http://www.mathildegirlgenius.com/DressFitting/DressDemo.htm
Italian Renaissance Gown: http://ilaria.veltri.tripod.com/italiandress.html
Late Renaissance: http://www.lepg.org/patterns.htmhttp://homepages.wmich.edu/~rowen/renbk/rendressbook.html
Balzo Female Headdress: http://www.sword.net/jessica/firenze/Early15thCenturyBalzo.pdf
German Renaissance: http://germanrenaissance.net/free-patterns-for-16th-century-german-renaissance-clothing-and-accessories/
EVERYTHING: http://rosaliegilbert.com/fabricsandsewing.html
MORE EVERYTHING: http://www.modaruniversity.org/briana/Briana3.htm
Apron Dress: http://sca.uwaterloo.ca/mjc/sca/aprond.html
Great Kilt: http://www.brotherguido.com/Greatkilt/Default.htm
Irish Leine: http://www.notrca.com/obrienclan/genealogy/tartans/leine_%20outline.htm
Renaissance Shirt: http://renaissancetailor.com/demos_shirt.htm
Viking Tunic: http://www.cs.vassar.edu/~capriest/viktunic.html
ACCESSORIES
Male Undergarments: http://www.larp.com/midgard/braies.htmhttp://www.reddawn.net/costume/drawstri.htm
Male Trunk Hose: http://moondragon.info/wiki/Quick_and_Dirty_Trunk_Hose
Male Codpiece: https://landsknecht.wikispaces.com/Apprentice+Codpiece
Saxon Hosen: http://www.larp.com/midgard/hosen.htm
Balzo Female Headdress: http://www.sword.net/jessica/firenze/Early15thCenturyBalzo.pdf
French Hood: http://www.modehistorique.com/research/ReconstructingTheFrenchHood_06-2009.pdf
Soft Cap: http://www.reddawn.net/costume/cap.htm
Turban: http://www.daviddfriedman.com/Medieval/miscellany_pdf/Other_Articles_V_Turban.pdf
Ruff: http://www.reddawn.net/costume/ruff.htmhttp://n2kye.webwarren.com/aiguillettes/
MAKING IT TIPS
GREAT TIPS ON CONSTRUCTION: http://seamlyne.com/design/costume/
Hand/Finishing Stitches: http://www.ia470.com/wardrobe/stitches.html
Elizabethan Pleats: http://www.elizabethancostume.net/pleats/
German Pleats: http://germanrenaissance.net/pleatwork-in-the-15th-and-16th-centuries-an-online-guide/creating-folds-in-early-modern-european-pleated-garments/
HAIR
Faking Italian Hairdressing: http://www.morgandonner.com/2014/02/italian-braids-and-curls/
Faking German Braids: http://germanrenaissance.net/zopfe-german-braids-false-braidsartificial-braids-history-how-to-make-and-how-to-wear/
SCA HAIRDRESSING: https://www.pinterest.com/jschwarzwalder/diy-sca-hair/